switch(foo){
  case 1:

  case 2: doSomething();
}

switch(foo){
  case 1:
/*
Put a message here 
*/
  case 2: doSomething();
}

switch(foo) { case 0:


  case 1: b(); }

switch(foo) { case 0:
/* with comments */
  case 1: b(); }

switch (a) {
  case 1: ; break;
  case 3: }